WO2018015644A1 - Refillable ball-propulsion grenade - Google Patents

Refillable ball-propulsion grenade Download PDF

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Publication number
WO2018015644A1
WO2018015644A1 PCT/FR2017/051940 FR2017051940W WO2018015644A1 WO 2018015644 A1 WO2018015644 A1 WO 2018015644A1 FR 2017051940 W FR2017051940 W FR 2017051940W WO 2018015644 A1 WO2018015644 A1 WO 2018015644A1
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WO
WIPO (PCT)
Prior art keywords
housing
balls
axial
grenade
rechargeable
Prior art date
Application number
PCT/FR2017/051940
Other languages
French (fr)
Inventor
Rémy NGUYEN
Original Assignee
Lw Distribution
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Lw Distribution filed Critical Lw Distribution
Publication of WO2018015644A1 publication Critical patent/WO2018015644A1/en

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B8/00—Practice or training ammunition
    • F42B8/12—Projectiles or missiles
    • F42B8/26—Hand grenades
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B12/00—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material
    • F42B12/02—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect
    • F42B12/36—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect for dispensing materials; for producing chemical or physical reaction; for signalling ; for transmitting information
    • F42B12/40—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect for dispensing materials; for producing chemical or physical reaction; for signalling ; for transmitting information of target-marking, i.e. impact-indicating type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B12/00—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material
    • F42B12/02—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect
    • F42B12/36—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect for dispensing materials; for producing chemical or physical reaction; for signalling ; for transmitting information
    • F42B12/56—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect for dispensing materials; for producing chemical or physical reaction; for signalling ; for transmitting information for dispensing discrete solid bodies
    • F42B12/58—Cluster or cargo ammunition, i.e. projectiles containing one or more submissiles
    • F42B12/60—Cluster or cargo ammunition, i.e. projectiles containing one or more submissiles the submissiles being ejected radially
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42C—AMMUNITION FUZES; ARMING OR SAFETY MEANS THEREFOR
    • F42C1/00—Impact fuzes, i.e. fuzes actuated only by ammunition impact
    • F42C1/10—Impact fuzes, i.e. fuzes actuated only by ammunition impact without firing-pin
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42C—AMMUNITION FUZES; ARMING OR SAFETY MEANS THEREFOR
    • F42C14/00—Mechanical fuzes characterised by the ammunition class or type
    • F42C14/02—Mechanical fuzes characterised by the ammunition class or type for hand grenades
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42C—AMMUNITION FUZES; ARMING OR SAFETY MEANS THEREFOR
    • F42C15/00—Arming-means in fuzes; Safety means for preventing premature detonation of fuzes or charges
    • F42C15/18—Arming-means in fuzes; Safety means for preventing premature detonation of fuzes or charges wherein a carrier for an element of the pyrotechnic or explosive train is moved
    • F42C15/184—Arming-means in fuzes; Safety means for preventing premature detonation of fuzes or charges wherein a carrier for an element of the pyrotechnic or explosive train is moved using a slidable carrier

Definitions

  • the present invention relates to a rechargeable grenade with ball propulsion of the type used in war simulation games.
  • grenades of this type consist of an envelope inside which are arranged firstly a series of projectiles, which are most of the time consisting of balls made of synthetic material, and secondly a propellant, usually consisting of butane, propane or carbon dioxide.
  • These grenades furthermore comprise a triggering device which, under the effect of a shock, such as, for example, the fall of the grenade on the ground, releases the propellant gas which then expels the balls to be thrown out onto the ground. 'envelope.
  • a shock such as, for example, the fall of the grenade on the ground
  • These grenades also include an inhibitory device that allows, at rest, to disable and reactivate when switching to an offensive period.
  • the inhibiting device imposes the use of a pin and a spoon which constitute so many moving parts that can easily be mislaid by the user and which, nevertheless, are imperatively necessary for the use and to secure the grenade.
  • Some of these grenades require disassembly for their reinitialization, sometimes even by means of a specific key, which has the effect of making this operation particularly complex and delicate.
  • the present invention proposes to remedy these various drawbacks by proposing a grenade that requires no pin or spoon for its safety, and whose refueling propellant can be carried out outside the grenade itself as well as explained below, and whose sensitivity to shock can be easily changed according to the wishes of users.
  • the present invention thus relates to a rechargeable grenade intended for the propulsion of balls to be sprayed comprising storage means and propulsion means and means able to make it active or inactive, characterized in that it comprises two subassemblies. demountable self-contained namely:
  • this outer cylindrical casing traversed by an axial cylindrical housing, this outer cylindrical casing comprising receptacles for storing the balls to be sprayed which are in communication with a duct with the axial cylindrical housing,
  • an axial tubular core adapted to be housed in a sealed manner in the axial cylindrical housing and containing means for filling and storing a propellant gas and suitable triggering means, under the effect of a shock at releasing said propellant gas towards the duct so as to propel the balls to project outwards.
  • the core will preferably be provided with fixing means inside the axial cylindrical housing, in particular consisting of a threading arranged at the lower end thereof.
  • the axial tubular core is hollowed out of a housing which receives a drawer consisting of an axial rod terminated at each of its ends by a piston provided with means able to ensure its sealing with the inner wall of said housing, this drawer being able to occupy two main positions, namely a first position, or active position, in which it puts in communication the means for storing the propellant gas with said duct and a second position, or inactive position, in which it blocks the passage of the propellant to said conduit.
  • One of the ends of the core may be provided with a bottom with which, in the inactive position, one of the pistons of the drawer, or lower piston, is in contact, the outer portion of this piston is provided with a valve propellant filling device which is accessible from the outside by an orifice of said bottom, which is in communication, by a channel pierced in the axial rod, with a volume, or storage volume, between the two pistons, the axial rod and the inner wall of the axial cylindrical housing.
  • the core may be provided at each of its ends with a seal, including an O-ring, with the axial cylindrical housing and may have a smaller diameter than the latter, so as to provide a volume between them which is in communication, via the conduit, with the storage receptacles of the balls to be projected.
  • the wall of the core may be pierced with at least one passage, the latter being situated in a position such that, when the grenade is in the inactive position, it is located above the upper piston of the slide and, when the grenade is located in the active position, it is under said upper piston, so as to put in communication means for storing the propellant gas with the receptacles of the balls to be projected via the conduit.
  • the movement of the slide from the non-active position to the active position may be controlled by shock triggering means.
  • the axial rod of the drawer may comprise, in its upper part, an axial housing in which will be slidably mounted a tubular member provided with locking means preventing, in the inactive position, the upward movement of the drawer under the effect of propellant pressure.
  • These locking means may consist of at least one ball which will be housed in a radial orifice of the tubular element and which will be maintained in part out of this orifice by holding means.
  • These holding means may consist of a cylindrical shutter member which will be hollowed out of a housing adapted to receive said ball, and which will be slidably mounted in the axial housing, so as to be able to occupy two positions, to namely a first position, or active position of the grenade, wherein said housing is facing the radial orifice to receive the ball and a second position, or inactive position of the grenade, wherein said housing will not face at the radial orifice so as to maintain the ball partially out of said orifice.
  • the present invention also relates to a shock trigger device for a grenade in which balls to be sprayed are expelled by a gas under pressure, this expulsion being controlled by the movement of a slide-mounted slide valve relative to a tubular element which has at least one radial opening and which slidably receives a trigger element which is provided with on its periphery a groove adapted to receive at least one ball, this ball whose diameter is greater than the distance separating the outer wall of the trigger element from the outer wall of the tubular element and is less than the distance separating the bottom of the circumferential groove of the outer wall of the tubular element is disposed in the radial opening, the trigger element comprising means able to move it under the effect of a shock to bring it into a position such that the circumferential groove faces the opening.
  • the trigger element may comprise flexible connection means, arranged at the top of the trigger element, which will be connected to a flyweight.
  • the flexible connection means may consist of a hook which will be provided with the trigger element which will be engaged with a hook of the same type arranged at the bottom of the feeder.
  • the present invention is particularly interesting in that it firstly makes it possible to easily separate the storage function from the expulsion function. It is thus easy according to the invention, by a simple exchange of the outer shell, to change the shape and size of the balls to be expelled, or even the functionality of the grenade. It also allows, by simple exchange of the core, to quickly and simply change the propellant or replace a core discharged by a core filled with gas, which allows to perform the reloading. gas out of the envelope containing the balls which on the one hand improves the safety of use of the grenade and, on the other hand allows a fast reload of the latter.
  • the present invention also allows to remove the pins and spoons and replace them with a single button which is likely to improve the level of safety of the grenade.
  • the grenade according to the invention is also interesting in that it is automatically resettable to the extent that, after a detonation, the mechanism returns of itself in a position in which it is ready to operate again, subject of course a reloading ball and propellant, which represents a great simplification and a gain of time particularly appreciable during a game session.
  • FIG. 1 is a side view with partial vertical section of a grenade according to the invention
  • FIG. 2 is an axial and vertical sectional view of a grenade according to the invention in an inactive position;
  • FIG. 3 is a partial and enlarged axial sectional view of the grenade shown in FIG. 2;
  • FIG. 3a is a schematic view of principle showing the shock triggering mechanism of the grenade according to the invention, in the non-active position,
  • FIG. 3b is a schematic view of principle showing the shock triggering mechanism of the grenade according to the invention, in the active position,
  • FIG. 4 is a view in partial axial section and enlarged grenade shown in Figures 2 and 3 in the active position
  • FIGS. 5 and 6 are schematic details of the means for moving the grenade from the active position to the non-active position and vice versa
  • FIG. 7 is a view of an alternative embodiment of triggering means according to the invention.
  • FIGS. 1 to 4 show a grenade according to the present invention which comprises two essential elements, namely an envelope 1 and a core 3.
  • the casing 1 consists of a cylinder of synthetic material which is traversed axially through a housing 5 which is lined by a metal tube 7, in particular made of aluminum, which is provided at its base. 8.
  • the casing 1 is hollowed on its periphery with a series of six longitudinal receptacles 10 which are intended to contain balls to be sprayed 12 and which are each in communication with the inner part of the tube 7 by a radial duct 9 .
  • the core 3 consists of a cylindrical metal tube, in particular aluminum, substantially of the same height as the casing 1 and which, at its base, is provided with a thread 3 'intended to allow its screwing into the thread 8 of the tube 7 and is closed by a bottom 3a.
  • the core consists of a cylindrical metal tube, in particular aluminum, substantially of the same height as the casing 1 and which, at its base, is provided with a thread 3 'intended to allow its screwing into the thread 8 of the tube 7 and is closed by a bottom 3a.
  • the internal volume of the core 3 receives a "drawer” 15 which consists of a cylindrical axis 15a which is provided at each of its ends with a piston, namely a lower piston 15b and an upper piston 15c, each of these pistons having on its periphery an O-ring 15d for seal with the inner wall of the tube 7, the lower piston 15b having a diameter slightly less than that of the upper piston 15c.
  • a pressurized gas filling valve 17 which is in communication via a conduit 17a internal to the axis 15a with an outlet 17b.
  • the lower piston 15b In the non-active position of the grenade, as shown in FIGS. 2, 3, and 3a, the lower piston 15b is in contact with the bottom 3a of the core 3 and an orifice
  • the upper part of the axis 15a of the spool 15 is pierced with an axial housing 21 whose outlet orifice opens at the top onto a bowl 23.
  • This housing receives an tubular element 25 which is closed at its lower part and which ends at its upper part by a plate 27.
  • a compression spring 28 is disposed between the bottom of the axial housing 21 and the tubular element 25.
  • a shutter member 29 is slidably mounted in this tubular element 25.
  • the latter is pierced with four radial holes 33, in the present example, which are positioned in such a way that in the non-active position of the grenade and as shown in Figures 2, 3 and 3a, they open into the bowl 23. It can thus be disposed in each of these holes 33 a metal ball 35 having a diameter D slightly less than that of the holes 33.
  • the space a separating the inner edge of the bowl 23 from the outer wall of the shutter element 29 is slightly greater than the diameter D of the balls 35, so that each of these balls is trapped in the longitudinal direction between the walls of the holes 33 and, in the transverse direction, between the inner edge of the bowl 23 and the outer wall of the shutter member 29 and that, d ' the other hand, the distan this b separating the outer wall of the tubular element 25 from the outer wall of the shutter element 29 is smaller than the diameter D of the balls 35.
  • the upper part of the core 3 is provided with an internal thread 37 in which a cover 39 is screwed on, and a shoulder 41 on which the plate 27 of the tubular element 25 bears on one of its faces. while its other face is blocked by the cover 39 when it is screwed into the thread
  • the shutter element 29 ends at its part upper by a hook 43a in which is engaged a hook 43b which is disposed at the bottom of a feeder 45 whose shape is generally spherical in the present embodiment.
  • the latter is thus free to pivot about the axis of rotation formed by the connection of the two hooks 43a and 43b.
  • the shutter element 29 is provided with a circular groove 47 whose edges are chamfered at substantially 45 ° and whose depth is such that, as shown in FIGS. 3b and 4, it can receive the balls 35 that they no longer exceed the outer surface of the tubular member 25. To do this we will ensure, as shown in Figure 3b, that the distance c separating the bottom of the groove 47 of the outer surface of the tubular element 25 is greater than the diameter D of the balls 35.
  • the lid 39 comprises means capable of exerting a bearing on the weight 45 which is shown schematically in Figures 2 and 3 by an arrow E.
  • the cover 39 applies no force E to the flyweight 45.
  • the flyweight 45 driven by its inertia, performs a rotation which has the effect of raising the shutter member 29, the circular groove 47 is then in front of the balls 35, if although these can then be housed partly in said groove and therefore no longer outside the outer wall of the tubular element 25, as shown in Figures 3b and 4.
  • the drawer 15 is no longer blocked by the balls 35, and can then rise under the effect of the pressure of the propellant gas, as shown in Figure 4.
  • the lower face of the upper piston 15c is then located above the openings radial 13 and in these c onditions, the volume V2_ of the gas storage chamber is in communication, via the radial openings 13, with the volume which itself communicates with the receptacles 10 of the balls to be projected 12 by the radial ducts 9, so that the The balls are expelled by the propellant gas under pressure.
  • the force E exerted on the weight 45 to put the grenade in the inactive position can be exerted by a device such as that shown in Figures 5 and 6.
  • This device comprises the cylindrical cover 39 which, as explained above, is screwed into the internal thread 37 made in the upper part of the core 3, and which comprises at its upper part a circular boss 49 against the inner face of which comes into pressing a rotary control button 51 against which is applied, by a compression spring 53 a control member 55.
  • the lower portion of the control member 55 forms a cavity 57 shaped bell which is intended to bear on the weight 45 as explained below.
  • the upper part of the control member 55 forms two diametrically opposite cams 58, against which two diametrically opposed pressure fingers 59 are placed arranged at the lower part of the control knob 51 and which are brought into contact with the cams 58 by the spring 53.
  • the two cams 58 have a profile such that when the knob is turned clockwise the fingers 59 cause the control member 55 to descend against the force exerted by the spring
  • the radial holes 33 'made in the tubular element 25 and intended to receive the balls 35 are no longer cylindrical but conical, the large base of the cone being directed towards the axis of symmetry uu 'of the tubular element.
  • Such a mode of implementation allows, as before, the balls 35 to lock the drawer 15 and retract inside the groove 47 of the shutter member 29 while remaining prisoners of the element tubular 25 which allows to remove the holding bowl 23.
  • the present invention unlike the devices of the prior art, it makes it possible to easily separate the storage function of the balls to be projected from the expulsion function of the latter.
  • the envelope 1 and the core 3 thus form two easily separable subassemblies, which are autonomous, that is to say which, even if separated from one another, each retain their own function, the envelope 1 ensuring the storage function and the core 3 ensuring the expulsion function.
  • the invention makes it possible to perform the reloading of gas out of the casing containing the balls to be sprayed, which greatly improves the safety of use of the pomegranate according to the invention.

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  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
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Abstract

The present invention relates to a refillable grenade intended for the propulsion of balls to be projected (12). Said grenade is characterised in that it comprises two standalone removable sub-assemblies, namely: a cylindrical outer shell (1) including storage receptacles (10) for the balls to be projected (12); a tubular axial core (3) containing means (17) for filling and storing (V2) a propellant gas, and trigger means (29, 45) capable, under the effect of an impact, of propelling the balls (12) towards the outside. The present invention also relates to an impact trigger device for a refillable grenade, in which the balls to be projected (12) are expelled by a pressurised gas.

Description

GRENADE RECHARGEABLE A PROPULSION DE BILLES  RECHARGEABLE GRANADE WITH BALL PROPULSION
La présente invention concerne une grenade rechargeable à propulsion de billes du type utilisée dans les jeux de simulation de guerre. The present invention relates to a rechargeable grenade with ball propulsion of the type used in war simulation games.
On connaît de nombreuses grenades de ce type qui, ainsi que celle objet de la demande CA 2 639 564, sont constituées d'une enveloppe à l'intérieur de laquelle sont disposés de première part une série de projectiles, qui sont la plupart du temps constitués de billes en matière de synthèse, et de seconde part un gaz propulseur, constitué la plupart du temps par du butane, du propane ou du dioxyde de carbone .  Many grenades of this type are known which, as well as that subject of the application CA 2,639,564, consist of an envelope inside which are arranged firstly a series of projectiles, which are most of the time consisting of balls made of synthetic material, and secondly a propellant, usually consisting of butane, propane or carbon dioxide.
Ces grenades comprennent en outre un dispositif de déclenchement qui, sous l'effet d'un choc, tel que par exemple la chute de la grenade sur le sol, libère le gaz propulseur qui expulse alors les billes à projeter à l'extérieur de l'enveloppe.  These grenades furthermore comprise a triggering device which, under the effect of a shock, such as, for example, the fall of the grenade on the ground, releases the propellant gas which then expels the balls to be thrown out onto the ground. 'envelope.
Ces grenades comprennent également un dispositif inhibiteur qui permet, au repos, de les désactiver et de les réactiver lorsque l'on passe à une période offensive.  These grenades also include an inhibitory device that allows, at rest, to disable and reactivate when switching to an offensive period.
La plupart du temps, le dispositif inhibiteur impose l'utilisation d'une goupille et d'une cuillère qui constituent autant de pièces mobiles susceptibles d'être égarées facilement par l'utilisateur et qui, pourtant, sont impérativement nécessaires à l'utilisation et à la mise en sécurité de la grenade.  Most of the time, the inhibiting device imposes the use of a pin and a spoon which constitute so many moving parts that can easily be mislaid by the user and which, nevertheless, are imperatively necessary for the use and to secure the grenade.
Certaines de ces grenades nécessitent un démontage pour leur réinitialisation, parfois même au moyen d'une clef spécifique, ce qui a pour effet de rendre cette opération particulièrement complexe et délicate.  Some of these grenades require disassembly for their reinitialization, sometimes even by means of a specific key, which has the effect of making this operation particularly complex and delicate.
Enfin, aucune des grenades de l'état antérieur de la technique ne permet un rechargement en gaz propulseur sans réaliser celui-ci sur la grenade elle-même, ce qui est susceptible d'entraîner des problèmes relatifs à la sécurité . Finally, none of the grenades of the prior art allows a refueling propellant without make it on the grenade itself, which is likely to lead to safety issues.
Tel est le cas de la grenade décrite dans la demande de brevet US 2013/0068208 qui ne comporte pas deux sous- ensembles autonomes c'est-à-dire deux sous-ensembles qui, même lorsqu'ils sont désolidarisés l'un de l'autre, assurent néanmoins chacun leur fonction propre à savoir respectivement une fonction de stockage et une fonction d'expulsion.  This is the case of the pomegranate described in the patent application US 2013/0068208 which does not comprise two autonomous subsets ie two subsets which, even when they are disconnected one of the However, each of them nevertheless ensures their own function, namely respectively a storage function and an expulsion function.
La présente invention se propose de remédier à ces divers inconvénients en proposant une grenade qui ne nécessite aucune goupille ni aucune cuillère pour sa mise en sécurité, et dont le rechargement en gaz propulseur peut être effectué en dehors de la grenade elle-même ainsi qu'expliqué ci-après, et dont la sensibilité aux chocs peut être aisément modifiée en fonction des souhaits des utilisateurs .  The present invention proposes to remedy these various drawbacks by proposing a grenade that requires no pin or spoon for its safety, and whose refueling propellant can be carried out outside the grenade itself as well as explained below, and whose sensitivity to shock can be easily changed according to the wishes of users.
La présente invention a ainsi pour objet une grenade rechargeable destinée à la propulsion de billes à projeter comprenant des moyens de stockage et des moyens de propulsion et des moyens aptes à la rendre active ou inactive, caractérisée en ce qu'elle comprend deux sous- ensembles démontables autonomes à savoir :  The present invention thus relates to a rechargeable grenade intended for the propulsion of balls to be sprayed comprising storage means and propulsion means and means able to make it active or inactive, characterized in that it comprises two subassemblies. demountable self-contained namely:
- une enveloppe cylindrique externe traversée par un logement cylindrique axial, cette enveloppe cylindrique externe comportant des réceptacles de stockage des billes à projeter qui sont en communication par un conduit avec le logement cylindrique axial,  an outer cylindrical casing traversed by an axial cylindrical housing, this outer cylindrical casing comprising receptacles for storing the balls to be sprayed which are in communication with a duct with the axial cylindrical housing,
- un noyau tubulaire axial apte à se loger de façon étanche dans le logement cylindrique axial et contenant des moyens de remplissage et de stockage d'un gaz propulseur et des moyens déclencheurs aptes, sous l'effet d'un choc à libérer ledit gaz propulseur vers le conduit de façon à propulser les billes à projeter vers l'extérieur. an axial tubular core adapted to be housed in a sealed manner in the axial cylindrical housing and containing means for filling and storing a propellant gas and suitable triggering means, under the effect of a shock at releasing said propellant gas towards the duct so as to propel the balls to project outwards.
Le noyau sera préférentiellement pourvu de moyens de fixation à l'intérieur du logement cylindrique axial, notamment constitués d'un filetage disposé à l'extrémité inférieure de ce dernier.  The core will preferably be provided with fixing means inside the axial cylindrical housing, in particular consisting of a threading arranged at the lower end thereof.
Suivant l'invention le noyau tubulaire axial est creusé d'un logement qui reçoit un tiroir constitué d'une tige axiale terminée à chacune de ses extrémités par un piston pourvu de moyens aptes à assurer son étanchéité avec la paroi interne dudit logement, ce tiroir étant apte à occuper deux positions principales, à savoir une première position, ou position active, dans laquelle il met en communication les moyens de stockage du gaz propulseur avec ledit conduit et une seconde position, ou position inactive, dans laquelle il bloque le passage du gaz propulseur vers ledit conduit.  According to the invention the axial tubular core is hollowed out of a housing which receives a drawer consisting of an axial rod terminated at each of its ends by a piston provided with means able to ensure its sealing with the inner wall of said housing, this drawer being able to occupy two main positions, namely a first position, or active position, in which it puts in communication the means for storing the propellant gas with said duct and a second position, or inactive position, in which it blocks the passage of the propellant to said conduit.
L'une des extrémités du noyau peut être pourvue d'un fond avec lequel, en position non active, l'un des pistons du tiroir, ou piston inférieur, est en contact, la partie externe de ce piston est pourvue d'une valve de remplissage de gaz propulseur qui est accessible de l'extérieur par un orifice dudit fond, qui est en communication, par un canal percé dans la tige axiale, avec un volume, ou volume de stockage, compris entre les deux pistons, la tige axiale et la paroi interne du logement cylindrique axial.  One of the ends of the core may be provided with a bottom with which, in the inactive position, one of the pistons of the drawer, or lower piston, is in contact, the outer portion of this piston is provided with a valve propellant filling device which is accessible from the outside by an orifice of said bottom, which is in communication, by a channel pierced in the axial rod, with a volume, or storage volume, between the two pistons, the axial rod and the inner wall of the axial cylindrical housing.
Le noyau pourra être pourvu à chacune de ses extrémités d'un joint d' étanchéité, notamment un joint torique, avec le logement cylindrique axial et pourra posséder un diamètre inférieur à celui de ce dernier, de façon à prévoir entre eux un volume qui est en communication, via le conduit, avec les réceptacles de stockage des billes à proj eter . La paroi du noyau pourra être percée d' au moins un passage, ce dernier étant situé dans une position telle que, lorsque la grenade est en position non active, il se trouve au-dessus du piston supérieur du tiroir et, lorsque la grenade se trouve en position active, il se trouve sous ledit piston supérieur, de façon à mettre en communication les moyens de stockage du gaz propulseur avec les réceptacles des billes à projeter via le conduit. Le déplacement du tiroir de la position non active à la position active pourra être contrôlé par des moyens de déclenchement à choc. The core may be provided at each of its ends with a seal, including an O-ring, with the axial cylindrical housing and may have a smaller diameter than the latter, so as to provide a volume between them which is in communication, via the conduit, with the storage receptacles of the balls to be projected. The wall of the core may be pierced with at least one passage, the latter being situated in a position such that, when the grenade is in the inactive position, it is located above the upper piston of the slide and, when the grenade is located in the active position, it is under said upper piston, so as to put in communication means for storing the propellant gas with the receptacles of the balls to be projected via the conduit. The movement of the slide from the non-active position to the active position may be controlled by shock triggering means.
A cet effet la tige axiale du tiroir pourra comporter, en sa partie supérieure, un logement axial dans lequel sera monté à coulissement un élément tubulaire pourvu de moyens de blocage empêchant, en position non active, le déplacement vers le haut du tiroir sous l'effet de la pression du gaz propulseur. Ces moyens de blocage pourront être constitués d'au moins une bille qui sera logée dans un orifice radial de l'élément tubulaire et qui sera maintenue en partie sortie de cet orifice par des moyens de maintien.  For this purpose the axial rod of the drawer may comprise, in its upper part, an axial housing in which will be slidably mounted a tubular member provided with locking means preventing, in the inactive position, the upward movement of the drawer under the effect of propellant pressure. These locking means may consist of at least one ball which will be housed in a radial orifice of the tubular element and which will be maintained in part out of this orifice by holding means.
Ces moyens de maintien pourront être constitués d'un élément obturateur cylindrique qui sera creusé d'un logement apte à recevoir ladite bille, et qui sera monté à coulissement dans le logement axial , de façon à être en mesure d'occuper deux positions, à savoir une première position, ou position active de la grenade, dans laquelle ledit logement se trouve face à l'orifice radial de façon à recevoir la bille et une seconde position, ou position inactive de la grenade, dans laquelle ledit logement ne sera pas face à l'orifice radial de façon à maintenir la bille en partie sortie dudit orifice.  These holding means may consist of a cylindrical shutter member which will be hollowed out of a housing adapted to receive said ball, and which will be slidably mounted in the axial housing, so as to be able to occupy two positions, to namely a first position, or active position of the grenade, wherein said housing is facing the radial orifice to receive the ball and a second position, or inactive position of the grenade, wherein said housing will not face at the radial orifice so as to maintain the ball partially out of said orifice.
La présente invention a également pour objet un dispositif de déclenchement à choc pour grenade dans laquelle des billes à projeter sont expulsées par un gaz sous pression, cette expulsion étant commandée par le déplacement d'un tiroir monté coulissant par rapport à un élément tubulaire qui comporte au moins une ouverture radiale et qui reçoit à coulissement un élément déclencheur qui est pourvu sur sa périphérie d'une rainure apte à recevoir au moins une bille, cette bille dont le diamètre est supérieur à la distance séparant la paroi externe de l'élément déclencheur de la paroi externe de l'élément tubulaire et est inférieur à la distance séparant le fond de la rainure périphérique de la paroi externe de l'élément tubulaire, est disposée dans l'ouverture radiale, l'élément déclencheur comportant des moyens aptes à le déplacer sous l'effet d'un choc pour l'amener dans une position telle que la rainure périphérique se trouve face à l'ouverture. The present invention also relates to a shock trigger device for a grenade in which balls to be sprayed are expelled by a gas under pressure, this expulsion being controlled by the movement of a slide-mounted slide valve relative to a tubular element which has at least one radial opening and which slidably receives a trigger element which is provided with on its periphery a groove adapted to receive at least one ball, this ball whose diameter is greater than the distance separating the outer wall of the trigger element from the outer wall of the tubular element and is less than the distance separating the bottom of the circumferential groove of the outer wall of the tubular element is disposed in the radial opening, the trigger element comprising means able to move it under the effect of a shock to bring it into a position such that the circumferential groove faces the opening.
Les moyens aptes à déplacer, sous l'effet d'un choc, l'élément déclencheur pourront comprendre des moyens de liaison souples, disposés à la partie supérieure de l'élément déclencheur, qui seront reliés à une masselotte.  The means able to move, under the effect of a shock, the trigger element may comprise flexible connection means, arranged at the top of the trigger element, which will be connected to a flyweight.
Les moyens de liaison souple pourront être constitués d'un crochet dont sera pourvu l'élément déclencheur qui sera en prise avec un crochet de même type disposés à la partie inférieure de la masselotte.  The flexible connection means may consist of a hook which will be provided with the trigger element which will be engaged with a hook of the same type arranged at the bottom of the feeder.
La présente invention est particulièrement intéressante en ce qu'elle permet tout d'abord de séparer facilement la fonction de stockage de la fonction expulsion. Il est ainsi facile suivant l'invention, par un simple échange de l'enveloppe externe, de changer la forme et la dimension des billes à expulser, voire même la fonctionnalité de la grenade. Elle permet également, par un simple échange du noyau, de changer rapidement et simplement de gaz propulseur ou de remplacer un noyau déchargé par un noyau rempli de gaz, ce qui permet d'effectuer le rechargement en gaz hors de l'enveloppe contenant les billes ce qui d'une part améliore la sécurité d'utilisation de la grenade et, d' autre part permet un rechargement rapide de cette dernière . The present invention is particularly interesting in that it firstly makes it possible to easily separate the storage function from the expulsion function. It is thus easy according to the invention, by a simple exchange of the outer shell, to change the shape and size of the balls to be expelled, or even the functionality of the grenade. It also allows, by simple exchange of the core, to quickly and simply change the propellant or replace a core discharged by a core filled with gas, which allows to perform the reloading. gas out of the envelope containing the balls which on the one hand improves the safety of use of the grenade and, on the other hand allows a fast reload of the latter.
La présente invention permet également de supprimer les goupilles et les cuillères et de les remplacer par un simple bouton ce qui est de nature à améliorer le niveau de sécurité de la grenade.  The present invention also allows to remove the pins and spoons and replace them with a single button which is likely to improve the level of safety of the grenade.
La grenade suivant l'invention est également intéressante en ce qu'elle est automatiquement réinitialisable dans la mesure où, après une détonation, le mécanisme revient de lui-même dans une position dans laquelle il est prêt de nouveau à fonctionner, sous réserve bien entendu d'un rechargement en billes et en gaz propulseur, ce qui représente une grande simplification et un gain de temps particulièrement appréciable au cours d'une séance de jeux.  The grenade according to the invention is also interesting in that it is automatically resettable to the extent that, after a detonation, the mechanism returns of itself in a position in which it is ready to operate again, subject of course a reloading ball and propellant, which represents a great simplification and a gain of time particularly appreciable during a game session.
On décrira ci-après, à titre d'exemple non limitatif, des formes d'exécution de la présente invention, en référence au dessin annexé sur lequel :  Hereinafter, by way of nonlimiting example, embodiments of the present invention will be described with reference to the appended drawing in which:
- la figure 1 est une vue de côté avec coupe partielle verticale d'une grenade suivant l'invention,  - Figure 1 is a side view with partial vertical section of a grenade according to the invention,
- la figure 2 est une vue en coupe axiale et verticale d'une grenade suivant l'invention en position non active, - la figure 3 est une vue en coupe axiale partielle et agrandie de la grenade représentée sur la figure 2,  FIG. 2 is an axial and vertical sectional view of a grenade according to the invention in an inactive position; FIG. 3 is a partial and enlarged axial sectional view of the grenade shown in FIG. 2;
la figure 3a est une vue schématique de principe montrant le mécanisme de déclenchement à choc de la grenade suivant l'invention, en position non active,  FIG. 3a is a schematic view of principle showing the shock triggering mechanism of the grenade according to the invention, in the non-active position,
- la figure 3b est une vue schématique de principe montrant le mécanisme de déclenchement à choc de la grenade suivant l'invention, en position active,  FIG. 3b is a schematic view of principle showing the shock triggering mechanism of the grenade according to the invention, in the active position,
- la figure 4 est une vue en coupe axiale partielle et agrandie de la grenade représentée sur les figures 2 et 3 en position active, FIG. 4 is a view in partial axial section and enlarged grenade shown in Figures 2 and 3 in the active position,
les figures 5 et 6 sont des vues de détails schématiques des moyens permettant de faire passer la grenade de la position active à la position non active et inversement,  FIGS. 5 and 6 are schematic details of the means for moving the grenade from the active position to the non-active position and vice versa,
- la figure 7 est une vue d'une variante de réalisation de moyens de déclenchement suivant l'invention.  FIG. 7 is a view of an alternative embodiment of triggering means according to the invention.
On a représenté sur les figures 1 à 4 une grenade suivant la présente invention qui comporte deux éléments essentiels, à savoir une enveloppe 1 et un noyau 3.  FIGS. 1 to 4 show a grenade according to the present invention which comprises two essential elements, namely an envelope 1 and a core 3.
Plus précisément l'enveloppe 1 est constituée d'un cylindre en matière de synthèse qui est traversé axialement de part en part par un logement 5 qui est chemisé par un tube en métal 7, notamment en aluminium, qui est pourvu à sa base d'un filetage 8. L'enveloppe 1 est creusée sur sa périphérie d'une série de six réceptacles longitudinaux 10 qui sont destinés à contenir des billes à projeter 12 et qui sont chacun en communication avec la partie interne du tube 7 par un conduit radial 9.  More precisely, the casing 1 consists of a cylinder of synthetic material which is traversed axially through a housing 5 which is lined by a metal tube 7, in particular made of aluminum, which is provided at its base. 8. The casing 1 is hollowed on its periphery with a series of six longitudinal receptacles 10 which are intended to contain balls to be sprayed 12 and which are each in communication with the inner part of the tube 7 by a radial duct 9 .
Le noyau 3 est constitué d'un tube métallique cylindrique, notamment en aluminium, sensiblement de même hauteur que l'enveloppe 1 et qui, à sa base, est pourvu d'un filetage 3' destiné à permettre son vissage dans le filetage 8 du tube 7 et est fermé par un fond 3a. Le noyau The core 3 consists of a cylindrical metal tube, in particular aluminum, substantially of the same height as the casing 1 and which, at its base, is provided with a thread 3 'intended to allow its screwing into the thread 8 of the tube 7 and is closed by a bottom 3a. The core
3 comporte, à chacune de ses extrémités, un joint torique 11 qui est destiné à assurer son étanchéité avec la paroi interne du tube 7. Le diamètre de la paroi externe du noyau 3 est légèrement inférieur à celui de la paroi interne du tube 7 de sorte qu' il existe un volume entre ces deux éléments. Ce volume VJL est en communication avec le volume interne du noyau 3 par une série d'ouvertures radiales 13. 3 comprises, at each of its ends, an O-ring 11 which is intended to seal with the inner wall of the tube 7. The diameter of the outer wall of the core 3 is slightly less than that of the inner wall of the tube 7 of so that there is a volume between these two elements. This volume VJL is in communication with the internal volume of the core 3 by a series of radial openings 13.
Le volume interne du noyau 3 reçoit un « tiroir » 15 qui est constitué d'un axe cylindrique 15a qui est pourvu, à chacune de ses extrémités, d'un piston, à savoir un piston inférieur 15b et un piston supérieur 15c, chacun de ces pistons comportant sur sa périphérie un joint torique 15d destiné à assurer son étanchéité avec la paroi interne du tube 7, le piston inférieur 15b ayant un diamètre légèrement inférieur à celui du piston supérieur 15c. The internal volume of the core 3 receives a "drawer" 15 which consists of a cylindrical axis 15a which is provided at each of its ends with a piston, namely a lower piston 15b and an upper piston 15c, each of these pistons having on its periphery an O-ring 15d for seal with the inner wall of the tube 7, the lower piston 15b having a diameter slightly less than that of the upper piston 15c.
L'une des extrémités du tiroir 13, à savoir dans le cadre de la présente description son extrémité inférieure sur le dessin, est pourvue d'une valve de remplissage de gaz sous pression 17 qui est en communication par un conduit 17a interne à l'axe 15a avec un orifice de sortie 17b. En position non active de la grenade, ainsi que représenté sur les figures 2, 3, et 3a, le piston inférieur 15b est en contact avec le fond 3a du noyau 3 et un orifice One end of the drawer 13, namely in the context of the present description its lower end in the drawing, is provided with a pressurized gas filling valve 17 which is in communication via a conduit 17a internal to the axis 15a with an outlet 17b. In the non-active position of the grenade, as shown in FIGS. 2, 3, and 3a, the lower piston 15b is in contact with the bottom 3a of the core 3 and an orifice
19 percé dans le fond donne un accès par l'utilisateur à la valve de remplissage 17. 19 pierced in the bottom gives access by the user to the filling valve 17.
Ainsi que représenté sur les figures 2 et 3, les ouvertures radiales 13 précédemment mentionnées, sont situées au-dessus du piston supérieur 15c lorsque le tiroir As shown in Figures 2 and 3, the radial openings 13 mentioned above, are located above the upper piston 15c when the drawer
15 est disposé dans le noyau 3 et que la grenade est en position non active. Dans cette position on comprend que, lorsque l'on injecte un gaz propulseur sous pression, notamment un gaz liquéfié tel que du butane ou du propane, par la valve de remplissage 17, ce gaz suit le conduit 17a, et sort par l'orifice 17b pour se trouver contenu dans le volume V2_ compris entre les deux pistons 15b et 15c, l'axe 15a et la paroi interne du noyau 3, ce volume V2_ constituant le réservoir de gaz propulseur de la grenade. 15 is disposed in the core 3 and the grenade is in the inactive position. In this position, it is understood that, when a pressurized propellant gas, in particular a liquefied gas such as butane or propane, is injected through the filling valve 17, this gas follows the conduit 17a and leaves through the orifice 17b to be contained in the volume V2_ between the two pistons 15b and 15c, the axis 15a and the inner wall of the core 3, this volume V2_ constituting the propellant gas tank of the grenade.
Ainsi que représenté sur les figures 2 et 3 la partie supérieure de l'axe 15a du tiroir 15 est percée d'un logement axial 21 dont l'orifice de sortie s'ouvre en partie supérieure sur une cuvette 23. Ce logement reçoit un élément tubulaire 25 qui est fermé à sa partie inférieure et qui se termine à sa partie supérieure par un plateau 27. Un ressort de compression 28 est disposé entre le fond du logement axial 21 et l'élément tubulaire 25. As shown in FIGS. 2 and 3, the upper part of the axis 15a of the spool 15 is pierced with an axial housing 21 whose outlet orifice opens at the top onto a bowl 23. This housing receives an tubular element 25 which is closed at its lower part and which ends at its upper part by a plate 27. A compression spring 28 is disposed between the bottom of the axial housing 21 and the tubular element 25.
Un élément obturateur 29 est monté, à coulissement dans cet élément tubulaire 25. Ce dernier est percé de quatre trous radiaux 33, dans le présent exemple, qui sont positionnés de façon telle, qu'en position non active de la grenade et ainsi que représenté sur les figures 2, 3 et 3a, ils débouchent dans la cuvette 23. On peut ainsi disposer dans chacun de ces trous 33 une bille métallique 35 d'un diamètre D légèrement inférieur à celui des trous 33. On fera en sorte que, ainsi que montré sur le schéma de détails des figures 3a et 3b, d'une part, l'espace a séparant le bord interne de la cuvette 23 de la paroi externe de l'élément obturateur 29 soit légèrement supérieur au diamètre D des billes 35, de façon que chacune de ces billes se trouve emprisonnée dans le sens longitudinal entre les parois des trous 33 et, dans le sens transversal, entre le bord interne de la cuvette 23 et la paroi externe de l'élément obturateur 29 et que, d'autre part, la distance b séparant la paroi externe de l'élément tubulaire 25 de la paroi externe de l'élément obturateur 29 soit inférieure au diamètre D des billes 35.  A shutter member 29 is slidably mounted in this tubular element 25. The latter is pierced with four radial holes 33, in the present example, which are positioned in such a way that in the non-active position of the grenade and as shown in Figures 2, 3 and 3a, they open into the bowl 23. It can thus be disposed in each of these holes 33 a metal ball 35 having a diameter D slightly less than that of the holes 33. It will be ensured that, as well 3a and 3b, on the one hand, the space a separating the inner edge of the bowl 23 from the outer wall of the shutter element 29 is slightly greater than the diameter D of the balls 35, so that each of these balls is trapped in the longitudinal direction between the walls of the holes 33 and, in the transverse direction, between the inner edge of the bowl 23 and the outer wall of the shutter member 29 and that, d ' the other hand, the distan this b separating the outer wall of the tubular element 25 from the outer wall of the shutter element 29 is smaller than the diameter D of the balls 35.
La partie supérieure du noyau 3 est pourvue d'un filetage intérieur 37 dans lequel vient se visser un couvercle 39, et d'un épaulement 41 sur lequel le plateau 27 de l'élément tubulaire 25 vient en appui par l'une de ses faces alors que son autre face est bloquée par le couvercle 39 lorsque celui-ci est vissé dans le filetage The upper part of the core 3 is provided with an internal thread 37 in which a cover 39 is screwed on, and a shoulder 41 on which the plate 27 of the tubular element 25 bears on one of its faces. while its other face is blocked by the cover 39 when it is screwed into the thread
37. Dans ces conditions on comprend que l'élément tubulaire 25 est complètement immobilisé par rapport au noyau 3. 37. Under these conditions it is understood that the tubular element 25 is completely immobilized with respect to the core 3.
L'élément obturateur 29 se termine à sa partie supérieure par un crochet 43a dans lequel vient s'engager un crochet 43b qui est disposé à la partie inférieure d'une masselotte 45 dont la forme est globalement sphérique dans le présent mode de mise en oeuvre. Cette dernière est ainsi libre de pivoter autour de l'axe de rotation formé par la liaison des deux crochets 43a et 43b. Par ailleurs l'élément obturateur 29 est pourvu d'une rainure circulaire 47 dont les bords sont chanfreinés à sensiblement 45° et dont la profondeur est telle que, ainsi que représenté sur les figures 3b et 4, elle peut recevoir les billes 35 de façon que celles-ci ne dépassent plus de la surface externe de l'élément tubulaire 25. Pour ce faire on fera en sorte, ainsi que représenté sur la figure 3b, que la distance c séparant le fond de la rainure 47 de la surface externe de l'élément tubulaire 25 soit supérieure au diamètre D des billes 35. The shutter element 29 ends at its part upper by a hook 43a in which is engaged a hook 43b which is disposed at the bottom of a feeder 45 whose shape is generally spherical in the present embodiment. The latter is thus free to pivot about the axis of rotation formed by the connection of the two hooks 43a and 43b. Furthermore, the shutter element 29 is provided with a circular groove 47 whose edges are chamfered at substantially 45 ° and whose depth is such that, as shown in FIGS. 3b and 4, it can receive the balls 35 that they no longer exceed the outer surface of the tubular member 25. To do this we will ensure, as shown in Figure 3b, that the distance c separating the bottom of the groove 47 of the outer surface of the tubular element 25 is greater than the diameter D of the balls 35.
Le couvercle 39 comprend des moyens aptes à exercer un appui sur la masselotte 45 qui est représenté de façon schématique sur les figures 2 et 3 par une flèche E.  The lid 39 comprises means capable of exerting a bearing on the weight 45 which is shown schematically in Figures 2 and 3 by an arrow E.
Dans ces conditions, le fonctionnement de la grenade suivant l'invention s'établit ainsi que décrit ci-après.  Under these conditions, the operation of the grenade according to the invention is established as described below.
On procède tout d' abord au chargement de cette dernière d'une part en mettant en place les billes à projeter 12 dans les réceptacles 10 et, d'autre part, en introduisant un gaz propulseur, tel que notamment du butane ou du propane, dans le volume de stockage V2_ par la valve de remplissage 17. Sous la pression du gaz le tiroir 15 est sollicité vers le haut sur les figures, dans le sens de la flèche F.  First of all, the loading of the latter on the one hand by placing the balls to be sprayed 12 in the receptacles 10 and, on the other hand, by introducing a propellant gas, such as in particular butane or propane, in the storage volume V2_ by the filling valve 17. Under the pressure of the gas the spool 15 is biased upwards in the figures, in the direction of the arrow F.
Dans la position dite non active de la grenade, qui est représentée sur les figures 2, 3, et 3a, le tiroir 15 ne peut pas remonter puisque son mouvement vers le haut est bloqué par les billes 35 qui débordent de la surface externe de l'élément tubulaire 25. On remarquera que, même en cas de choc appliqué à la grenade rien n'est modifié dans la mesure où la masselotte 45 est fortement appliquée contre l'ouverture de l'élément tubulaire 25 par la force de verrouillage E, bloquant le déplacement vers le haut de l'élément obturateur 29. In the so-called non-active position of the grenade, which is represented in FIGS. 2, 3 and 3a, the spool 15 can not go back up since its upward movement is blocked by the balls 35 which overflow from the surface external of the tubular element 25. It will be noted that, even in the event of shock applied to the grenade, nothing is modified insofar as the weight 45 is strongly applied against the opening of the tubular element 25 by the force of locking E, blocking the upward movement of the shutter member 29.
Dans la position dite active de la grenade, et ainsi que représenté sur la figure 4, le couvercle 39 n'applique plus de force E sur la masselotte 45. Ainsi, en cas de choc violent tel que celui subi par la grenade lorsque, après un lancé, elle entre en contact avec le sol, la masselotte 45 entraînée par son inertie, effectue une rotation ce qui a pour effet de faire remonter l'élément obturateur 29 dont la rainure circulaire 47 se trouve alors en face des billes 35, si bien que celles-ci peuvent alors se loger en partie dans ladite rainure et ne dépassent plus dès lors en dehors de la paroi externe de l'élément tubulaire 25, ainsi que représenté sur les figures 3b et 4. Dans ces conditions, le tiroir 15 n'est donc plus bloqué par les billes 35, et peut alors remonter sous l'effet de la pression du gaz propulseur, ainsi que représenté sur la figure 4. La face inférieure du piston supérieur 15c se trouve alors située au-dessus des ouvertures radiales 13 et, dans ces conditions, le volume V2_ de la chambre de stockage du gaz se trouve en communication, via les ouvertures radiales 13, avec le volume qui lui-même communique avec les réceptacles 10 des billes à projeter 12 par les conduits radiaux 9, si bien que les billes se trouvent expulsées par le gaz propulseur sous pression.  In the so-called active position of the grenade, and as shown in FIG. 4, the cover 39 applies no force E to the flyweight 45. Thus, in the event of a violent impact such as that experienced by the grenade when, after a thrown, it comes into contact with the ground, the flyweight 45 driven by its inertia, performs a rotation which has the effect of raising the shutter member 29, the circular groove 47 is then in front of the balls 35, if although these can then be housed partly in said groove and therefore no longer outside the outer wall of the tubular element 25, as shown in Figures 3b and 4. In these conditions, the drawer 15 is no longer blocked by the balls 35, and can then rise under the effect of the pressure of the propellant gas, as shown in Figure 4. The lower face of the upper piston 15c is then located above the openings radial 13 and in these c onditions, the volume V2_ of the gas storage chamber is in communication, via the radial openings 13, with the volume which itself communicates with the receptacles 10 of the balls to be projected 12 by the radial ducts 9, so that the The balls are expelled by the propellant gas under pressure.
Une fois le gaz propulseur expulsé de la chambre de stockage V2, la pression dans cette dernière devient égale à la pression atmosphérique et, sous l'action du ressort de compression 28, le tiroir 15 est ramené à sa position initiale, ainsi que représenté sur les figures 2, 3 et 3b. Après le remplissage en billes à projeter et en gaz propulseur de la grenade, cette dernière est de nouveau prête pour une nouvelle opération d'expulsion de billes à projeter sans nécessiter d'opérations supplémentaires. Once the propellant is expelled from the storage chamber V2, the pressure in the latter becomes equal to the atmospheric pressure and, under the action of the compression spring 28, the drawer 15 is returned to its position. initial, as shown in Figures 2, 3 and 3b. After the grenade has been filled with grease and propellant balls, the grenade is ready for a new operation to expel the balls to be sprayed without the need for additional operations.
Dans le mode de mise en œuvre représenté sur les dessins, la force E exercée sur la masselotte 45 afin de mettre la grenade en position non active peut être exercée par un dispositif tel que celui représenté sur les figures 5 et 6.  In the embodiment shown in the drawings, the force E exerted on the weight 45 to put the grenade in the inactive position can be exerted by a device such as that shown in Figures 5 and 6.
Ce dispositif comprend le couvercle cylindrique 39 qui, ainsi qu'exposé précédemment, vient se visser dans le filetage interne 37 réalisé à la partie supérieure du noyau 3, et qui comporte à sa partie supérieure un bossage circulaire 49 contre la face interne duquel vient en appui un bouton de commande rotatif 51 contre lequel est appliqué, par un ressort de compression 53 un organe de commande 55. La partie inférieure de l'organe de commande 55 forme une cavité 57 en forme de cloche qui est destinée à venir en appui sur la masselotte 45 ainsi qu'expliqué ci- après .  This device comprises the cylindrical cover 39 which, as explained above, is screwed into the internal thread 37 made in the upper part of the core 3, and which comprises at its upper part a circular boss 49 against the inner face of which comes into pressing a rotary control button 51 against which is applied, by a compression spring 53 a control member 55. The lower portion of the control member 55 forms a cavity 57 shaped bell which is intended to bear on the weight 45 as explained below.
La partie supérieure de l'organe de commande 55 forme deux cames 58 diamétralement opposées, contre lesquelles sont en appui deux doigts de pression 59 diamétralement opposés disposés à la partie inférieure du bouton de commande 51 et qui sont mis en contact avec les cames 58 par le ressort 53. Les deux cames 58 ont un profil tel que lorsque l'on tourne le bouton dans le sens des aiguilles d'une montre les doigts 59 font descendre l'organe de commande 55 à l' encontre de la force exercée par le ressort The upper part of the control member 55 forms two diametrically opposite cams 58, against which two diametrically opposed pressure fingers 59 are placed arranged at the lower part of the control knob 51 and which are brought into contact with the cams 58 by the spring 53. The two cams 58 have a profile such that when the knob is turned clockwise the fingers 59 cause the control member 55 to descend against the force exerted by the spring
53. Dans cette position qui est représentée sur les figures 2, 3 et 3a, l'organe de commande 55 exerce sur la masselotte 45 la force E et bloque tout déplacement de celle-ci vers le haut, si bien que la grenade est en position désactivée. 53. In this position, which is represented in FIGS. 2, 3 and 3a, the control member 55 exerts on the weight 45 the force E and blocks any movement of this one up, so that the grenade is in the off position.
A l'inverse, si l'on tourne le bouton de commande 51 en sens inverse des aiguilles d'une montre, les doigts 59 laissent remonter l'organe de commande 55 sous l'action de la force exercée par le ressort 53. Dans cette position qui est représentée sur les figures 3b et 4, l'organe de commande 55 se trouve dégagé de la masselotte 45 et celle- ci est ainsi libre de pivoter sous l'action d'un choc libérant ainsi le tiroir 15, ainsi qu'expliqué précédemment, si bien que la grenade est en position activée .  Conversely, if the control knob 51 is turned counterclockwise, the fingers 59 allow the control member 55 to rise under the action of the force exerted by the spring 53. this position, which is shown in FIGS. 3b and 4, the control member 55 is disengaged from the weight 45 and the latter is thus free to pivot under the action of a shock thus releasing the slide 15, as well as explained above, so that the grenade is in the activated position.
Dans une variante de la présente invention, représentée sur la figure 7, les trous radiaux 33' réalisés dans l'élément tubulaire 25 et qui sont destinés à recevoir les billes 35, ne sont plus cylindriques mais coniques, la grande base du cône étant dirigée vers l'axe de symétrie uu' de l'élément tubulaire. Un tel mode de mise en œuvre permet, comme précédemment, aux billes 35 d'assurer le blocage du tiroir 15 et de s'escamoter à l'intérieur de la rainure 47 de l'élément obturateur 29 tout en restant prisonnières de l'élément tubulaire 25 ce qui permet de supprimer la cuvette de maintien 23.  In a variant of the present invention, shown in FIG. 7, the radial holes 33 'made in the tubular element 25 and intended to receive the balls 35, are no longer cylindrical but conical, the large base of the cone being directed towards the axis of symmetry uu 'of the tubular element. Such a mode of implementation allows, as before, the balls 35 to lock the drawer 15 and retract inside the groove 47 of the shutter member 29 while remaining prisoners of the element tubular 25 which allows to remove the holding bowl 23.
Suivant l'invention il est possible de modifier facilement la sensibilité à l'impact de la grenade par une simple modification du poids de la masselotte 45. Ainsi on augmentera le poids de celle-ci pour rendre la grenade plus sensible et, à l'inverse, on le diminuera pour la rendre moins sensible. Une telle disposition permet au concepteur de proposer à sa clientèle, et ceci par une simple modification mineure, des grenades de diverses sensibilités .  According to the invention it is possible to easily modify the sensitivity to the impact of the pomegranate by a simple modification of the weight of the weight 45. Thus we will increase the weight of it to make the pomegranate more sensitive and, at the Inversely, it will be reduced to make it less sensitive. Such an arrangement allows the designer to propose to his customers, and this by a simple minor modification, grenades of various sensitivities.
Par ailleurs on remarquera que la présente invention permet, contrairement aux dispositifs de l'état antérieur de la technique, de séparer facilement la fonction de stockage des billes à projeter de la fonction d'expulsion de ces dernières. Moreover, it will be noted that the present invention unlike the devices of the prior art, it makes it possible to easily separate the storage function of the balls to be projected from the expulsion function of the latter.
En effet elle permet de désolidariser le noyau 3 de l'enveloppe 1 en le dévissant (par les filetages respectifs 8 et 3') et ceci que l'enveloppe 1 contienne ou non des billes à projeter ou que le noyau 3 contienne ou non du gaz. L'enveloppe 1 et le noyau 3 forment ainsi deux sous- ensembles séparables facilement, qui sont autonomes, c'est- à-dire qui, même séparés l'un de l'autre, conservent chacun leur fonction propre, l'enveloppe 1 assurant la fonction de stockage et le noyau 3 assurant la fonction expulsion.  Indeed, it makes it possible to separate the core 3 from the casing 1 by unscrewing it (by the respective threads 8 and 3 ') and whether or not the casing 1 contains balls to be sprayed or whether the core 3 contains or does not contain gas. The envelope 1 and the core 3 thus form two easily separable subassemblies, which are autonomous, that is to say which, even if separated from one another, each retain their own function, the envelope 1 ensuring the storage function and the core 3 ensuring the expulsion function.
Plus précisément, un tel agencement permet ainsi, par un simple échange de l'enveloppe externe, de changer la forme et la dimension des billes à projeter, voire même la fonctionnalité de la grenade, et ceci sans être contraint de retirer au préalable le gaz contenu dans le noyau.  More precisely, such an arrangement thus makes it possible, by a simple exchange of the outer casing, to change the shape and size of the balls to be sprayed, or even the functionality of the pomegranate, and this without having to remove the gas first. content in the kernel.
Elle permet également, par un simple échange du noyau, de changer rapidement et simplement de gaz propulseur ou de remplacer un noyau déchargé par un noyau rempli de gaz ce qui permet d'augmenter considérablement l'autonomie de jeu.  It also allows, by a simple exchange of the core, to quickly and simply change the propellant or replace a core discharged by a core filled with gas which can significantly increase playtime.
Enfin l'invention permet d'effectuer le rechargement en gaz hors de l'enveloppe contenant les billes à projeter, ce qui améliore grandement la sécurité d'utilisation de la grenade suivant l'invention.  Finally, the invention makes it possible to perform the reloading of gas out of the casing containing the balls to be sprayed, which greatly improves the safety of use of the pomegranate according to the invention.

Claims

REVENDICATIONS
1.- Grenade rechargeable destinée à la propulsion de billes à projeter (12) comprenant des moyens de stockage et des moyens de propulsion et des moyens aptes à la rendre active ou inactive, caractérisée en ce qu'elle comprend deux sous-ensembles démontables autonomes à savoir : 1.- Rechargeable pomegranate for the propulsion of balls to be sprayed (12) comprising storage means and propulsion means and means adapted to make it active or inactive, characterized in that it comprises two autonomous demountable subassemblies to know :
- une enveloppe cylindrique externe (1) traversée par un logement cylindrique axial (5) , cette enveloppe cylindrique externe comportant des réceptacles de stockage an outer cylindrical casing (1) traversed by an axial cylindrical housing (5), this outer cylindrical casing having storage receptacles;
(10) des billes à projeter (12) qui sont en communication par un conduit (9) avec le logement cylindrique axial (5) ,(10) projecting balls (12) which are in communication via a conduit (9) with the axial cylindrical housing (5),
- un noyau tubulaire axial (3) apte à se loger de façon étanche dans le logement cylindrique axial (5) et contenant des moyens de remplissage (17) et de stockage (V2) d'un gaz propulseur et des moyens déclencheurs (29,45) aptes, sous l'effet d'un choc à libérer ledit gaz propulseur vers le conduit (9) de façon à propulser les billes à projeter (12) vers l'extérieur. an axial tubular core (3) adapted to be housed in a sealed manner in the axial cylindrical housing (5) and containing means (17) for filling and for storing (V2) a propellant gas and for triggering means (29, 45) able, under the effect of a shock to release said propellant to the conduit (9) so as to propel the balls to project (12) outwardly.
2.- Grenade rechargeable suivant la revendication 1 caractérisée en ce que le noyau (3) est pourvu de moyens de fixation (3' ) à l'intérieur du logement cylindrique axial (5), notamment constitués d'un filetage (8) disposé à l'extrémité inférieure de ce dernier.  2.- rechargeable pomegranate according to claim 1 characterized in that the core (3) is provided with fixing means (3 ') within the axial cylindrical housing (5), in particular constituted by a thread (8) arranged at the lower end of the latter.
3.- Grenade rechargeable suivant l'une des revendications précédentes, caractérisée en ce que le noyau tubulaire axial (3) est creusé d'un logement qui reçoit un tiroir (15) constitué d'une tige axiale (15a) terminée à chacune de ses extrémités par un piston (15b, 15c) pourvu de moyens (15d) aptes à assurer son étanchéité avec la paroi interne dudit logement, ce tiroir (15) étant apte à occuper deux positions principales, à savoir une première position, ou position active, dans laquelle il met en communication les moyens de stockage du gaz propulseur avec ledit conduit (9) et une seconde position, ou position inactive, dans laquelle il bloque le passage du gaz propulseur vers ledit conduit (9) . 3.- rechargeable pomegranate according to one of the preceding claims, characterized in that the axial tubular core (3) is hollowed out of a housing which receives a drawer (15) consisting of an axial rod (15a) terminated at each of its ends by a piston (15b, 15c) provided with means (15d) adapted to ensure its sealing with the inner wall of said housing, this drawer (15) being adapted to occupy two main positions, namely a first position, or active position , in which he puts communication means for storing the propellant gas with said duct (9) and a second position, or inactive position, in which it blocks the passage of the propellant gas to said duct (9).
4.- Grenade rechargeable suivant la revendication 3 caractérisée en ce que l'une des extrémités du noyau (3) est pourvue d'un fond (3a) avec lequel, en position non active, l'un des pistons du tiroir, ou piston inférieur (15b), est en contact, la partie externe de ce piston (15b) est pourvue d'une valve de remplissage de gaz propulseur 4.- rechargeable pomegranate according to claim 3 characterized in that one end of the core (3) is provided with a bottom (3a) with which, in the inactive position, one of the pistons of the drawer, or piston lower (15b), is in contact, the outer portion of this piston (15b) is provided with a propellant gas filling valve
(17) qui est accessible de l'extérieur par un orifice (19) dudit fond (3a) , et qui est en communication, par un canal (17a) percé dans la tige axiale (15a), avec un volume (V2), ou volume de stockage, compris entre les deux pistons (15b, 15c), la tige axiale (15a) et la paroi interne du logement cylindrique axial (5) . (17) which is accessible from the outside by an orifice (19) of said bottom (3a), and which is in communication, by a channel (17a) drilled in the axial rod (15a), with a volume (V2), or storage volume, between the two pistons (15b, 15c), the axial rod (15a) and the inner wall of the axial cylindrical housing (5).
5.- Grenade rechargeable suivant la revendication 4 caractérisée en ce que le noyau (3) est pourvu à chacune de ses extrémités d'un joint d' étanchéité, notamment un joint torique (11), avec le logement cylindrique axial (5) et le noyau (3) possède un diamètre inférieur à celui de ce dernier, de façon à prévoir entre eux un volume (VI) qui est en communication, via le conduit (9) avec les réceptacles de stockage (10) des billes à projeter (12).  5.- rechargeable pomegranate according to claim 4 characterized in that the core (3) is provided at each of its ends with a seal, in particular an O-ring (11), with the axial cylindrical housing (5) and the core (3) has a diameter smaller than that of the latter, so as to provide between them a volume (VI) which is in communication via the conduit (9) with the storage receptacles (10) of the balls to be sprayed ( 12).
6.- Grenade rechargeable suivant la revendication 5 caractérisée en ce que la paroi du noyau (3) est percée d'au moins un passage (13), ce dernier étant dans une position telle que, lorsque la grenade est en position non active, il se trouve au-dessus du piston supérieur (15c) du tiroir (15) et, lorsque la grenade se trouve en position active, il se trouve sous ledit piston supérieur (15c) de façon à mettre en communication les moyens de stockage du gaz propulseur avec les réceptacles (10) des billes à proj eter ( 12 ) . 6.- rechargeable pomegranate according to claim 5 characterized in that the wall of the core (3) is pierced with at least one passage (13), the latter being in a position such that, when the pomegranate is in the inactive position, it is located above the upper piston (15c) of the slide (15) and, when the grenade is in the active position, it is under said upper piston (15c) so as to put in communication the storage means of the propellant gas with the receptacles (10) of the balls to project (12).
7. - Grenade rechargeable suivant la revendication 6 caractérisée en ce que le déplacement du tiroir (15) de la position non active à la position active est contrôlé par des moyens de déclenchement à choc (29,35,45).  7. - rechargeable pomegranate according to claim 6 characterized in that the displacement of the slide (15) from the non-active position to the active position is controlled by shock triggering means (29,35,45).
8. - Grenade rechargeable suivant la revendication 7 caractérisée en ce que la tige axiale (15a) du tiroir (15) comporte, en sa partie supérieure, un logement axial (21) dans lequel est monté à coulissement un élément tubulaire 8. - rechargeable pomegranate according to claim 7 characterized in that the axial rod (15a) of the spool (15) comprises, in its upper part, an axial housing (21) in which is slidably mounted a tubular element
(25) pourvu de moyens de blocage empêchant, en position non active, le déplacement vers le haut du tiroir (15) sous l'effet de la pression du gaz propulseur. (25) provided with locking means preventing, in the inactive position, the upward movement of the slide (15) under the effect of the pressure of the propellant gas.
9. - Grenade rechargeable suivant la revendication 8 caractérisée en ce que les moyens de blocage sont constitués d'au moins une bille (35) qui est logée dans un orifice radial (33) de l'élément tubulaire (25) et qui est maintenue en partie sortie de cet orifice (33) par des moyens de maintien.  9. - Rechargeable pomegranate according to claim 8 characterized in that the locking means consist of at least one ball (35) which is housed in a radial orifice (33) of the tubular element (25) and which is maintained partly out of this orifice (33) by holding means.
10.- Grenade rechargeable suivant la revendication 9 caractérisée en ce que les moyens de maintien sont constitués d'un élément obturateur cylindrique (29) qui est creusé d'un logement (47) apte à recevoir la bille (35), et qui est monté à coulissement dans le logement axial (21), de façon à être en mesure d'occuper deux positions, à savoir une première position, ou position active de la grenade, dans laquelle ledit logement (47) se trouve face à l'orifice radial (33) de façon à recevoir la bille (35) et une seconde position, ou position inactive de la grenade dans laquelle ledit logement (47) n'est pas face à l'orifice radial (33) de façon à maintenir la bille (35) en partie sortie dudit orifice. 10.- rechargeable pomegranate according to claim 9 characterized in that the holding means consist of a cylindrical shutter member (29) which is hollowed out of a housing (47) adapted to receive the ball (35), and which is slidably mounted in the axial housing (21), so as to be able to occupy two positions, namely a first position, or active position of the grenade, wherein said housing (47) is opposite the orifice radial (33) to receive the ball (35) and a second position, or inactive position of the grenade in which said housing (47) is not facing the radial orifice (33) so as to maintain the ball (35) partly out of said orifice.
11. - Dispositif de déclenchement à choc pour grenade dans laquelle des billes à projeter (12) sont expulsées par un gaz sous pression, caractérisé en ce que cette expulsion est commandée par le déplacement d'un tiroir (15) monté coulissant par rapport à un élément tubulaire (25) qui comporte au moins une ouverture radiale (33) et qui reçoit à coulissement un élément déclencheur (29) qui est pourvu sur sa périphérie d'au moins un logement (47) apte à recevoir au moins une bille (35) , cette bille (35) dont le diamètre (D) est supérieur à la distance (b) séparant la paroi externe de l'élément déclencheur (29) de la paroi externe de l'élément tubulaire (25) et est inférieur à la distance (c) séparant le fond du logement (47) de la paroi externe de l'élément tubulaire (25), est disposée dans l'ouverture radiale (33), l'élément déclencheur (29) comportant des moyens (43a, 43) aptes à le déplacer sous l'effet d'un choc pour l'amener dans une position telle que le logement (47) se trouve face à l'ouverture (33) . 11. - Shock release device for grenade in which the balls to be sprayed (12) are expelled by a gas under pressure, characterized in that this expulsion is controlled by the movement of a slide (15) slidably mounted relative to a tubular element (25) which has at least one radial opening (33) and which slidably receives a trigger element (29) which is provided on its periphery with at least one housing (47) adapted to receive at least one ball ( 35), said ball (35) whose diameter (D) is greater than the distance (b) separating the outer wall of the trigger element (29) from the outer wall of the tubular element (25) and is less than the distance (c) separating the bottom of the housing (47) from the outer wall of the tubular element (25) is arranged in the radial opening (33), the trigger element (29) comprising means (43a, 43) adapted to move it under the effect of a shock to bring it into a position such that the housing (47) faces the opening (33).
12. - Dispositif de déclenchement à choc suivant la revendication 11 caractérisé en ce que les moyens aptes à déplacer, sous l'effet d'un choc, l'élément déclencheur (29) comprennent des moyens de liaison souples, disposés à la partie supérieure de l'élément déclencheur (29), avec une masselotte (45) .  12. - Shocking device according to claim 11 characterized in that the means adapted to move, under the effect of a shock, the trigger element (29) comprises flexible connection means, arranged at the upper part. of the trigger element (29), with a flyweight (45).
13.- Dispositif de déclenchement à choc suivant la revendication 12 caractérisé en ce que les moyens de liaison souple sont constitués d'un crochet (43a) dont est pourvu l'élément déclencheur (29) qui est en prise avec un crochet (43b) de même type disposés à la partie inférieure de la masselotte (45) .  13.- A shock release device according to claim 12 characterized in that the flexible connection means consist of a hook (43a) which is provided with the trigger element (29) which is engaged with a hook (43b) of the same type arranged at the lower part of the weight (45).
PCT/FR2017/051940 2016-07-20 2017-07-17 Refillable ball-propulsion grenade WO2018015644A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1670394A FR3054311B1 (en) 2016-07-20 2016-07-20 RECHARGEABLE GRANADE WITH BALL PROPULSION
FRFR1670394 2016-07-20

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR837467A (en) * 1937-05-04 1939-02-10 Sageb Rocket refinements for revolving projectiles
FR1504902A (en) * 1965-12-06 1967-12-08 Oerlikon Buehrle Holding A G Percussion fuze
US6453819B1 (en) * 2000-11-06 2002-09-24 Paul R. Coates Paint ball grenade
JP3962352B2 (en) * 2003-04-23 2007-08-22 能久 本郷 Multiple gun launcher for game gun
CA2639564A1 (en) 2008-09-18 2010-03-18 Carlton Chong Reusable pellet shooting grenade
US20130068208A1 (en) 2011-09-16 2013-03-21 Chen Tang CHU Structure of grenade for toy gun
JP2013108698A (en) * 2011-11-22 2013-06-06 Tokyo Marui:Kk Cartridge for firing a plurality of bullets and imitation gun for firing a plurality of bullets

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR837467A (en) * 1937-05-04 1939-02-10 Sageb Rocket refinements for revolving projectiles
FR1504902A (en) * 1965-12-06 1967-12-08 Oerlikon Buehrle Holding A G Percussion fuze
US6453819B1 (en) * 2000-11-06 2002-09-24 Paul R. Coates Paint ball grenade
JP3962352B2 (en) * 2003-04-23 2007-08-22 能久 本郷 Multiple gun launcher for game gun
CA2639564A1 (en) 2008-09-18 2010-03-18 Carlton Chong Reusable pellet shooting grenade
US20130068208A1 (en) 2011-09-16 2013-03-21 Chen Tang CHU Structure of grenade for toy gun
JP2013108698A (en) * 2011-11-22 2013-06-06 Tokyo Marui:Kk Cartridge for firing a plurality of bullets and imitation gun for firing a plurality of bullets

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FR3054311B1 (en) 2019-11-15

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